EP0229484B1 - Drehpflüge - Google Patents

Drehpflüge Download PDF

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Publication number
EP0229484B1
EP0229484B1 EP19860309413 EP86309413A EP0229484B1 EP 0229484 B1 EP0229484 B1 EP 0229484B1 EP 19860309413 EP19860309413 EP 19860309413 EP 86309413 A EP86309413 A EP 86309413A EP 0229484 B1 EP0229484 B1 EP 0229484B1
Authority
EP
European Patent Office
Prior art keywords
plough
stub beam
reversible
abutment
stub
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP19860309413
Other languages
English (en)
French (fr)
Other versions
EP0229484A1 (de
Inventor
John Mills
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ransomes Sims and Jefferies PLC
Original Assignee
Ransomes Sims and Jefferies PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ransomes Sims and Jefferies PLC filed Critical Ransomes Sims and Jefferies PLC
Publication of EP0229484A1 publication Critical patent/EP0229484A1/de
Application granted granted Critical
Publication of EP0229484B1 publication Critical patent/EP0229484B1/de
Expired legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B61/00—Devices for, or parts of, agricultural machines or implements for preventing overstrain
    • A01B61/04—Devices for, or parts of, agricultural machines or implements for preventing overstrain of the connection between tools and carrier beam or frame
    • A01B61/044—Devices for, or parts of, agricultural machines or implements for preventing overstrain of the connection between tools and carrier beam or frame the connection enabling a yielding pivoting movement around a substantially horizontal and transverse axis
    • A01B61/046—Devices for, or parts of, agricultural machines or implements for preventing overstrain of the connection between tools and carrier beam or frame the connection enabling a yielding pivoting movement around a substantially horizontal and transverse axis the device including an energy accumulator for restoring the tool to its working position
    • A01B61/048—Devices for, or parts of, agricultural machines or implements for preventing overstrain of the connection between tools and carrier beam or frame the connection enabling a yielding pivoting movement around a substantially horizontal and transverse axis the device including an energy accumulator for restoring the tool to its working position the connection or the energy accumulator being active in two opposite directions, e.g. for reversible plows

Definitions

  • This invention relates to reversible ploughs in which a plough body may move relatively to the plough frame to avoid an obstacle in the ground, the plough body being returned into work once the obstacle has been cleared.
  • the stub beam is hollow and is held in place by means of a rod which passes from the mounting bracket along the interior of the stub beam to engage a spring mechanism acting between the rod and the stub beam so as to urge the mounting flange into engagement with the balls of the mounting bracket. If the working plough body should encounter an obstacle, the stub beam is able to pivot - against the action of the spring biassing mechanism - about the horizontal axis defined by the uppermost pair of balls. It will be understood that if the plough frame is reversed into the other ploughing position, tripping of the stub beam will bring into play the opposite pair of balls. If it is necessary to avoid the obstacle, the stub beam can pivot sideways about the axis defined by the right-hand or lefthand pair of balls as appropriate. This known mechanism is regarded as having certain drawbacks.
  • the present invention consists in a reversible plough comprising a plough frame reversible between left and right-handed ploughing positions; at least one stub beam carrying fixed left and right-handed plough bodies and mounted on the plough frame for pivotal movement about an axis which is horizontal at each ploughing position, in opposite directions away from an operative position in which the corresponding plough body is in work; and restoring means urging the stub beam to said operative position, the restoring means comprising a reaction means and biassing means carried on the stub beam urging said reaction means towards engagement with abutment means; characterised in that the reaction means comprises a unitary reaction member, in that the abutment means are mounted on the stub beam, in that the reaction member is biassed into engagement with the abutment means, and in that a pair of connecting elements are connected both at one end to the reaction member and at the opposite end to respective locations in the plough frame which are spaced on vertically opposite sides of said axis, such that
  • the abutment means comprises vertically spaced abutments with the connecting elements being connected to the reaction member at respective vertically spaced locations, such that on pivotal movement of the stub beam, the reaction member is caused to rock in a vertical plane about one abutment and to separate from the other abutment.
  • the connecting elements comprise respective links, said reaction in the connecting elements comprising tension in the corresponding link.
  • plough bodies 1 and 1 a are rigidly secured to a T-shaped stub beam 2 which is hollow.
  • the forward end of the stub beam 2 is forked (as seen in Figure 2) with each limb 3 of the fork having a slot 4 opening to its free end.
  • a slider block 5 having upper and lower flanges 6 and 7 which constrain the stub beam to sliding movement fore and aft relative to the slider block 5.
  • Each slider block is supported on a mounting bracket 8 through a spherical bearing 9, the two spherical bearings defining between them a horizontal tripping axis 10.
  • the mounting bracket 8 is rigidly secured to the plough frame shown at 11.
  • the stub beam 2 is able to rotate relative to the plough frame 11 about the tripping axis 10.
  • the stub beam 2 is able to move laterally with respect to the plough frame, such movement being accommodated by rocking of the slider blocks 5 on the spherical bearings 9 and by displacement of one stub beam limb 3 rearwardly with respect to the associated slider block.
  • a cross-bar 12 having lower and upper cup-shaped recesses 13 and 13a. Studs 15 and 15a are mounted in threaded engagement with respective sockets 16 and 16a on the stub beam and carry respective balls 14 and 14a. These balls are received respectively in the cup-shaped recesses 13 and 13a.
  • a pin 17 passing through the cross-bar 12 provides a mounting for the forward ends of a pair of parallel links 18, the rearward ends of which carry a further pin 19 passing through an eye at one end of a connecting rod 20.
  • the opposite end of the connecting rod 20 is pivotally connected at 21 with a bell crank 22 which is mounted for pivotal movement about a vertical pivot axis 23 provided by a pair of plates 24 secured to the rear of the stub beam.
  • the opposite extremity of the bell crank 22 is connected through a pin 25 with one end of a turnbuckle 26, connected in turn to a substantial tension spring 27 which is anchored at its other end to an ear 28 formed integrally with the stub beam.
  • each bearing forms a mounting for one end of a respective connecting link 31, 31 a, the opposite end of each link being slotted to receive a corresponding pin 32, 32a carried in the cross-bar 12.
  • the plough body may take a path which involves lateral movement of the stub beam in addition to - or more likely in combination with - the above described vertical movement.
  • the lateral movement of the stub beam is accommodated by tilting of each slider block 5 about its associated spherical bearing 9 with one limb of the stub beam sliding rearwardly with respect to the slider element. On the opposite limb, the slider block 5 will be in engagement with the closed end of the slot 4.
  • the spherical bearings 30 enable the links 31 and 31 a to follow this movement and tension in both these links will lead to separation of the cross-bar 12 equally from both balls 14 and 14a.
  • the lateral movement will, as mentioned above, usually be accompanied by upward movement.
  • connecting elements may be employed beyond the described slotted links.
  • solid links could be arranged to extend through apertures in the cross-bar, the free ends of the link having T-bars or other formations to prevent withdrawal of the link from the cross-bar.
  • chains or other flexible links might be employed. Whilst in the described embodiment and the variations suggested above, it is tension in the connecting element which tends to separate the cross-bar or other reaction member from the abutment, an al- temative arrangement is contemplated in which the reaction is compressive.
  • connection of the stub beam to the plough frame is universal and a further pair of connecting links is provided in the horizontal plane.
  • Two further abutments might then be provided on the stub beam; alternatively, a continuous annular abutment might be provided.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Soil Working Implements (AREA)

Claims (8)

1. Charrue reversible comprenant un chässis de charrue (11) reversible entre des positions de labour ä gauche et ä droite; au moins une embase (2) portant des corps de charrue fixes ä gauche et ä droite (1, 1a) et montee sur le chässis de charrue pour un mouvement pivotant autour d'un axe (10) qui est horizontal ä chaque position de labour, dans des directions opposees ä partir d'une position active dans laquelle le corps de charrue correspondant est en service; et des moyens de retour qui rappellent l'embase (2) ä ladite position active, les moyens de retour comprenant des moyens de reaction (12) et des moyens de poussee (18-28) portes sur l'embase et rappelant lesdits moyens de reaction vers le contact avec les moyens de butee; caracterisee en ce que les moyens de reaction comprennent un element de reaction unitaire (12), en ce que les moyens de butee (14, 14a) sont montes sur l'embase (2), en ce que I'element de reaction (12) est rappele en contact avec les moyens de butee (14, 14a) et en ce que deux barres de liaison (31, 31 a) sont connectees toutes deux, ä une extremite, ä I'element de reaction (12) et, ä I'extremite opposee, ä des endroits respectifs (30) du chässis de charrue (8, 11) qui sont espaces sur les cötes verticalement opposes dudit axe (10), de sorte que, lors du mouvement pivotant de l'embase (2), la tension dans une des barres de liaison (31, 31 a) sont ä separer I'element de reaction (12) des moyens de butee (14, 14a).
2. Charrue reversible suivant la revendication 1, dans laquelle les moyens de butee comprennent des butees verticalement espacees (14, 14a), les barres de liaison (31, 31 a) etant connectees ä I'element de reaction (12) ä des endroits respectifs verticalement espaces de sorte que, lors du mouvement pivotant de l'embase (2), I'element de reaction (12) doit pivoter dans un plan vertical autour d'une butee et s'eloigner de l'autre butee.
3. Charrue reversible suivant la revendication 2, dans laquelle les butees (14, 14a) sont reglables separement en position par rapport ä l'embase (2).
4. Charrue reversible suivant l'une quelconque des revendications precedentes, dans laquelle l'embase (2) est montée sur le chässis de charrue (8, 11) par l'intermédiaire de deux organes de portee sphériques (5, 9) espacés le long de l'axe de déclenchement, chaque organe de portée spherique permettant en outre un mouvement coulissant entre l'embase (2) et le chässis de charrue (8, 11).
5. Charrue reversible suivant la revendication 4, dans laquelle chaque organe de portée sphérique comprend un bloc de coulisseau (5) monté, par I'in- termediaire d'un palier spherique (9) sur le chässis de charrue (8, 11) et pouvant s'engager dans une rainure correspondante (4) de l'embase.
6. Charrue reversible suivant l'une quelconque des revendications précédentes, dans laquelle les barres de liaison sont montees pour un mouvement coulissant limité par rapport au chässis de charrue ou ä l'embase.
7. Charrue reversible suivant la revendication 6, dans laquelle chaque barre de liaison (31, 31 a) est connectee, ä une extremite, au chässis de charrue par l'intermédiaire d'un palier spherique (30).
8. Charrue reversible suivant l'une quelconque des revendications précédentes, dans laquelle l'embase peut etre enlevée du chässis de charrue tandis que les moyens de poussee (18-28) continuent ä pousser l'élément de reaction (12) vers le contact avec les moyens de butée (14, 14a).
EP19860309413 1985-12-03 1986-12-03 Drehpflüge Expired EP0229484B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8529752 1985-12-03
GB858529752A GB8529752D0 (en) 1985-12-03 1985-12-03 Reversible ploughs

Publications (2)

Publication Number Publication Date
EP0229484A1 EP0229484A1 (de) 1987-07-22
EP0229484B1 true EP0229484B1 (de) 1989-10-18

Family

ID=10589175

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19860309413 Expired EP0229484B1 (de) 1985-12-03 1986-12-03 Drehpflüge

Country Status (3)

Country Link
EP (1) EP0229484B1 (de)
DE (1) DE3666321D1 (de)
GB (1) GB8529752D0 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8913071U1 (de) * 1989-11-06 1989-12-14 Bayerische Pflugfabrik Gmbh, 8910 Landsberg Drehpflug
DE4117947A1 (de) * 1991-05-31 1992-12-03 Leipzig Bodenbearbeitung Veb Hydromechanische ueberlastsicherung fuer beet- und drehpfluege
DE4117949C2 (de) * 1991-05-31 1995-09-21 Bbg Bodenbearbeitungsgeraete L Mechanische Überlastsicherung für Beet- und Drehpflüge
DE10313177A1 (de) * 2003-03-25 2004-10-07 Amazonen-Werke H. Dreyer Gmbh & Co. Kg Überlastsicherheitseinrichtung für Bodenbearbeitungsgerät
DE102005020921B3 (de) * 2005-05-04 2007-01-25 Lemken Gmbh & Co. Kg Drehpflug mit Überlastsicherung
EP1983815B1 (de) * 2006-02-08 2017-06-07 Tru-Turf Pty Ltd Rollvorrichtung mit drei fahrgestellen mit glatten rollen
DK1856965T3 (da) 2006-05-19 2009-09-28 Lemken Gmbh & Co Kg Vendeplov med overbelastningssikring
CN115104394A (zh) * 2022-06-23 2022-09-27 广东皓耘科技有限公司 一种防过载保护装置及翻转犁

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2024509C3 (de) * 1970-05-20 1981-07-23 Rabewerk Heinrich Clausing, 4515 Bad Essen Stein- und Überlastsicherung für Volldrehpflüge
FR2255833A1 (en) * 1973-12-27 1975-07-25 Demblon Claude Obstacle safety device for reversible ploughs - has hydraulic pressure accumulator jack and pivoting beam
FR2301165A1 (fr) * 1975-02-20 1976-09-17 Fenet Gilbert Charrue munie d'un dispositif de securite
FR2358089A1 (fr) * 1976-07-12 1978-02-10 Viaud Sa Appareil aratoire pourvu d'un dispositif de securite pour ses outils
GB1597488A (en) * 1977-02-28 1981-09-09 Ransomes Sims & Jefferies Ltd Reversible ploughs
FR2419000A1 (fr) * 1978-03-06 1979-10-05 Viaud Sa Appareil aratoire pourvu d'un dispositif de securite pour ses outils

Also Published As

Publication number Publication date
EP0229484A1 (de) 1987-07-22
GB8529752D0 (en) 1986-01-08
DE3666321D1 (en) 1989-11-23

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